This is quite an ambitious game for a game jam. I can imagine that a lot of work went into creating the whole world! I think you have already a lot of basic pieces in place (character movement, shooting, etc.), but it might still take some tweaking to make it feel very smooth. I experienced quite some glitches for example enemies which got fused into me and enemies I could not shoot. I really liked the hilarious choice of enemies :D.
Congratulations to this entry!